Hydrocarbon motor



Patented Aug. 10, 1926.

UNITED STATES PTENT OFFICE.

JESSE G. VINCENT. OF DETROIT, MICHIGAN, ASSIGNOR T0 PACKARD MOTOR CAR COMPANY, 01` DETROIT,

MICHIGAN, A CORPORATION 0F MICHIGAN.

HYDROCARBON MOTOR.

Application tiled December 23, 1920. Serial No. 432,824.

This invention relates to hydrocarbon motors and particularly to the water circulation system thereof.

One of the objects of the present invention is to provide a hydrocarbon motor with a water circulation system that will prime itself.

Another object of the invention is to provide a thermostatically controlled water circulation system with a valve controlled bypass so that the pump of said system will prime itself.

Another objectof the invention is to adapt thermostatic control to a hydrocarbon motor in a novel and useful manner.

Another object of the invention is to adapt thermostatic control to the water circulation system of a hydrocarbon motor, particularly for marine use.

Other objects of the invention will appear from the following description taken in connection with the drawing, which forms a part of this specification, and in which the figure is an end elevation and part vertical section of a hydrocarbon motor embodying the invention.

Referring to the drawing, 10 represents the cylinder casting of a hydrocarbon motor which is mounted upon supports 11 in any suitable manner. One of the exhaust ports of the cylinder casting is shown at 12 and it connects with an exhaust manifold 13. The cylinder casting is water jacketed as shown at 14 and a pump 15 of any suitable form feeds water to the cylinder jacket through a pipe 16. The pump 15 is adapted to be driven by the motor and when the motor is used in a boat the inlet pipe 17 of the pump is connected with the sea water below the boat water line indicated at 17'.

The outlet from the motor cylinder jacket is at 18 where it empties into a pipe connection 19, forming an outlet 20, which in marine use will be carried overboard. This outlet pipe connection is controlled by a valve 21 connected to a thermostat 22 of well known bellows or sylphon type. One end of the bellows is rigidly connected to the exhaust manifold 13 as by a. nut 2? and the free end of the bellows is connected to the stem of the valve 21 as at 24.

It will be understood that the thermostat 22 is filled with a suitable expansible liquid and that in its cold state it will contract and hold the valve 21 to its seat as it is shown in the drawing. `When the thermostat is heated it will expand and open the valve 21 to permit the passage of the water to the outlet 20.

To allow the return of water to the pump when the valve 21 is closed a b -pass 25 is provided which connects the out et piping 19 with the inlet side of the pump 15. Thun when the valve 21 is closed the pump will circulate water through the jacket and the ny-pass until the motor heats the water sufficiently to expand the thermostat, thus quickly bringing the motor to the desirable high temperature for best operation.

When motors of this type are used in boats and are so set therein that the pump 15 is above the water line, as shown in the drawing, the water circulation system will drain when the motor stops. Therefore with the by-pass 25 unobstructed, the pump 15 will not prime itself when the motor is started because air will be circulated freely through the by-pass 25. For the purpose of overcoming this difficulty the by-pass 25 is provided with a pressure valve 26 which may be closed against a seat 27 by a spring 28. The valve and spring are guided by a cap 29 threaded into a valve cage 30 which forms a part of the by-pass 25. Suitable shims 31 may be used to permit ad- ]ustment of the spring 28 to the desired tension.

A vent 32 is provided in the circulation system, preferably near the upper part of the system and opening into the exhaust manifold 13 so that when the motor is started the air in the system will be vented from the upper part thereof into the exhaust pipe.

lith this construction it will be seen that, assuming the motor to be cold and the water drained out of it, when the motor is started both the thermostatically controlled valve 21 and the pressure valve 26 will be closed. The thermostatically controlled valve 21 is so formed that there is enough initial tension in the thermostat to hold this valve closed at and above the pressure that will open the valve 26 against its spring 28. Accordingly, as the motor is started air will be driven out of the system through the relatively small vent 32 and the water pump will draw water to itself through the inlet 17 and till the system. As soon as suliicient water has been pumped into the system to cause the valve 26 to open, the by-pass 25 will become operative and water will be by-passed until suicient heat is obtained to open the valve 21. The opening of the main outlet 20 will relieve the pressure in..

the system and the valve 26 will then close and the motor will be maintained at the desired temperature.

It will be understood that other forms of the invention than that shownabove may be used without departing from the spirit or scope of the invention.

Having thus described my invention, what I claim and desire to secure by Letters Patent is: A

1. In va hydrocarbon motor, the combination with the water circulation system thereof having a by-pass to the intake side of the pump, of a normally closed pressure valve in said by-pass.

2. In a hydrocarbon motor, the comblnation with the water circulation system thereof having a return by-pass to the pump and having a relatively small open vent, of a pressure valve in said by-pass.

3.- In a hydrocarbon motor, the combination with the water circulation system thereof having a return by-pass to the pump and having a thermostatically controlled main outlet. said system having a relatively small vent. of a pressure valve in said by-pass.

4. In a hydrocarbon motor, the combination with the water circulation system thereof having a by-pass and having a thermostatically controlled outlet, said by-pass connecting between the motor and said outlet, of a pressure valve in said by-pass.

5. In a hydrocarbon motor, the combination with the water jacket thereof. of a pump and connections for feeding water to said jacket, outlet piping from said jacket, a thermostatically controlled valve in said outlet piping. a by-pass from said piping to the intake side of said pump, and a spring closed valve in said by-pass.

6. In a hydrocarbon motor, the combination with the water jacket thereof, of a pump and connections for feeding Water to said jacket, outlet piping from said jacket, a thermostatically controlled valve in said outlet piping, a by-pass from said piping to the intake side of said pump, and a valve in said by-pass spring closed against pressure from said outlet pi ing.

7. In a hydrocar on motor, the combination with the water circulation system thereof having a by-pass, said system having a vent near its upper part into the exhaust ipe of the motor, of a thermostat controlling the outlet from said system, and a spring closed valve in said by-pass.

8. In a marine motor. the combination with the water circulation system thereof including a pump arranged above the boat water line, of a thermostatically controlled outlet from said s intake side of sai pump, and a pressure valve in said by-pass.

9. In a marine motor, the combination with the water circulation system thereof including a pump arranged above the boat water line, of a thermostatically controlled outlet from said system, a by-pass to the intake side of said pump, a pressure valve in said by-pass, and vent means in the upper part of said system.

10. In a hydrocarbon motor, the combination with the motor cylinder having a water jacket and an exhaust outlet, of a pump for supplying water to said jacket, a thermostatically controlled valve in the water jacket outlet connections, a vent from said jacket into said exhaust, a by-pass for the return of water to the ump when the thermostatically controlled) valve is closed. and a pressure valve in said byass.

11. In combination with the water clrculation system of a hydrocarbon motor, said system having an open vent therein, of a pressure controlled return by-pass in said system.

12. In a hydrocarbon motor, the combination with the water circulation system thereof having two outlets from the motor jacket, and means for circulating water through the system, of a thermostatically controlled valve for one of said outlets and a pressure controlled valve for the other outlet.

13. In a hydrocarbon motor, the combination with the water circulation system thereof having two outlets from the motor jacket, and means for circulating water through the system, of a thermostatically controlled valve for one of said outlets and a pressure controlled valve for the other outlet, the initial tension of the thermostatieally controlled valve being greater than that of the pressure controlled valve.

14. In a hydrocarbon motor, the combination with the water circulation system thereof having two outlets from the motor jacket, of a thermostatically controlled valve for one of said outlets and a. pressure controlled valve for the other outlet, the valves when cold being arranged so that the prssure valve will open before the other va ve.

15. In a hydrocarbon motor, the combination with the water circulation system thereof having a by-pass, of a yieldingly closed valve in said by-pass opening by pressure away from the outlet side of the motor water jacket.

16. In an engine, in combination, a cylinder having a water jacket, a pump or feeding water to said jacket, an outlet conduit from said jacket, a thermostatically controlled valve in said outlet, and relatively small vent means in said outlet conduit between said jacket and said valve.

stem, a by-pass to theV lod los

17. In a motor, in combination, a cylnder having a Water jacket, a pump connected to supply Water to said jacket, an outlet conduit from said jacket, a thermostatically controlled valve in said outlet, a bypass from said conduit to the inlet side of said pump, said by-pass being connected to said outlet conduit between said water jacket and said valve, and vent means in said outlet conduit between said Water jacket and said valve.

18. In a motor, in combination, a cylinder having a. water jacket, a pump connected to supply Water to said jacket an outlet conduit from said jacket, a t ermostatically controlled valve in said outlet, a by-pass from said conduit to the inlet side oi' said pump, said by-pass being connected to said outlet conduit between said water jacket and said valve, and a pressure controlled valve in said by-pass.

In testimony whereof I ax my signature.

JESSE G. VINCENT. 

